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ASRock B450 Pro4 Motherboard
ASRock B450 Pro4
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ASRock B450M-HDV Motherboard
ASRock B450M-HDV
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MSI B450M Pro-M2 Motherboard
MSI B450M Pro-M2
User rating
62
3.9 out of 5
62 user ratings
5 stars
35 %
4 stars
30 %
3 stars
25 %
2 stars
6 %
1 stars
1 %
49
3.9 out of 5
49 user ratings
5 stars
32 %
4 stars
32 %
3 stars
24 %
2 stars
8 %
1 stars
2 %
42
4.4 out of 5
42 user ratings
5 stars
47 %
4 stars
40 %
3 stars
11 %
2 stars
0 %
1 stars
0 %

General

Motherboard typeATXMicro-ATXMicro-ATX
Processor socketSocket AM4Socket AM4Socket AM4

Memory

Supported memory bus clock
  • 2400 MHz
  • 2133 MHz
  • 2667 MHz
  • 2933 MHz
  • 3200 MHz
  • 2400 MHz
  • 2133 MHz
  • 2667 MHz
  • 2933 MHz
  • 3200 MHz
  • 2400 MHz
  • 1866 MHz
  • 2133 MHz
  • 2667 MHz
  • 2800 MHz
  • 2933 MHz
  • 3000 MHz
  • 2667 MHz
  • 3200 MHz
  • 3466 MHz
  • 3066 MHz
RAM technologyDDR4DDR4DDR4
Memory slots typeDIMMDIMMDIMM
Maximum RAM size64 GB32 GB32 GB
Number of memory slots422
Memory channelsDualDualDual
Unbuffered memory
N/A
N/A
yes
Non-ECC
N/A
N/A
yes

Audio properties

Audio codecRealtek ALC892Realtek ALC887Realtek ALC887
Audio output channels7.17.17.1

Graphics

DirectX version12.012.0
N/A
Maximum resolution
  • 4096
  • 2160
  • 4096
  • 2160
  • 4096
  • 2160
Number of displays supported33
N/A

Technical details

Compatible processor seriesAMD RyzenAMD RyzenAMD Ryzen
Maximum number of processors111
Maximum number of SMP processors
N/A
N/A
1

BIOS

BIOS typeUEFI AMIUEFI AMIUEFI AMI
BIOS features
  • Multilingual BIOS
  • JumperFree
  • SMBIOS 2.3 support
  • UEFI BIOS
  • ACPI 5.1 support
  • Multilingual BIOS
  • JumperFree
  • SMBIOS 2.3 support
  • UEFI BIOS
  • ACPI 5.1 support
N/A
BIOS memory size128.0 mB128.0 mB128.0 mB
System Management BIOS (SMBIOS) version2.32.32.8
ACPI version5.15.15.0

Internal I/O ports

Number of COM connectors1
N/A
N/A
CPU fan connectoryesyesyes
12V power connectoryesyesyes
ATX Power connector (24-pin)YYY
TPM connectoryesyesyes
Number of SATA III connectors644
Number of chassis fan connectors
N/A
11
Serial port headers
N/A
N/A
1
Number of SATA connectors
N/A
N/A
2
Front panel connector
N/A
N/A
yes

Rear panel I/O ports

HDMI ports quantity111
Ethernet LAN (RJ-45) ports111
PS/2 ports quantity111
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
N/A
N/A
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity1
N/A
N/A
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity444
VGA (D-Sub) ports quantity111
DisplayPorts quantity1
N/A
N/A
DVI-D ports quantity
N/A
11
HDMI version
N/A
N/A
1.4

Network

Ethernet LAN (Network)yesyesyes
LAN controllerRealtek RTL8111HRealtek RTL8111HRealtek 8111H
Ethernet interface typeGigabit EthernetGigabit EthernetGigabit Ethernet

Dimensions

Width12.01 in9.09 in9.61 in
Depth8.82 in8.11 in8.11 in

Often compared with ASRock B450 Pro4

Often compared with ASRock B450M-HDV